<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    #app {
      width: 600px;
      margin: 10px auto;
    }

    .tb {
      border-collapse: collapse;
      width: 100%;
    }

    .tb th {
      background-color: #0094ff;
      color: white;
    }

    .tb td,
    .tb th {
      padding: 5px;
      border: 1px solid black;
      text-align: center;
    }

    .add {
      padding: 5px;
      border: 1px solid black;
      margin-bottom: 10px;
    }
  </style>
</head>

<body>

  <div id="app">
    <table class="tb">
      <tr>
        <th>编号</th>
        <th>品牌名称</th>
        <th>创立时间</th>
        <th>操作</th>
      </tr>
      <!-- 循环渲染的元素tr -->
      <tr v-for="(item,index) in list">
        <td>{{index+1}}</td>
        <td>{{item.name}}</td>
        <td>{{item.time}}</td>
        <td>
          <button @click="del(item.id)">删除</button>
        </td>
      </tr>
      <tr>
        <td v-show="flag" colspan="4">没有数据咯~</td>
      </tr>
    </table>
  </div>
  <script src="https://cdn.bootcdn.net/ajax/libs/vue/2.7.14/vue.js"></script>
  <script>

    /*
        需求1: 根据给的初始数据, 把购物车页面铺设出来
        需求2: 点击对应删除按钮, 删除对应数据
        需求3: 当数据没有了, 显示一条提示消息
   */                               
    const app = new Vue({                               
      el: '#app',                               
      data: {                               
        list: [                               
          { id: 1, name: "奔驰", time: "2020-08-01" },                               
          { id: 2, name: "宝马", time: "2020-08-02" },                               
          { id: 3, name: "奥迪", time: "2020-08-03" },                               
        ],                               
        flag: true                               
      },                               
      methods: {                               
        del(id) {                               
          this.list.forEach((item, index) => {                               
            if (item.id === id) {                               
              this.list.splice(index, 1)                               
            }                               
          })                               
          if (this.list.length === 0) {                               
            flag = true                               
          }                               
                               
        }
      }
    })
  </script>

</body>

</html>